Improvement in clutches for shaft-couplings



liA. A. OSBORN. Clutch for Shaft-Coupling. No. 196,822. Patented Nv. 6,1877.

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fllilllllllillllrillllnll a perspective view of my device.

UNITED STATEs PATENT OFFICE.

AMBEosE A. osBoRN, or lsAN EEANCIsCo, CALIFORNIA.

IMPROVEMENT IN CLUTCHES FORSHAFT-COUPLINGS.

Specificationr forming part of Letters Patent No'. 196,822, dated November 6, 1877 g application filed July 9,1877. Y f

To all whom it may concern:

Be it known that I, AiTBRosE A. Os'BoRN, of the city and county of San Francisco, and State of California, have invented an Improved Shaft Coupling; and I do hereby declare the following to be a full7 clear, and exact description thereof, reference being had to the accompanying drawings.

My invention relates to anovel construction for shaft-couplings, by which I am enabled to connect shafts running at any rate of speed without clash or jar, and at the same time in a perfectly secure manner. This I effect by combining Aa friction with a clutch coupling, in such a manner that the part of the shaft to be connected is put into motion by the friction device, and the positive clutch can afterward be easily locked, all as hereinafter fully described.

In the accompanying drawings, Figure 1 is Fig. 2 is a sectional elevation.

a is a shaft, driven by any power 5 and b is another shaft, which stands ina line with the 4flrst shaft. These shafts are provided with a clutch or rigid coupling device, as shown at c c', and the clutch c is operated by a lever, d, as shown. vThe difficulty in using this class of rigid couplings, especially in fast -running shafts, is found in overcoming the inertia of the stationary shaft without a disagreeable jar or danger of breaking the parts. In order to remedy this I employ, in combination with the clutch or rigid eouplin g, a friction-couplin g, which operates as follows: The fixed clutch c is secured to the driving-shaft a., andthe conical portion f of the friction coupling slides back and forward upon this clutch, to 'which it is united by a feather, as shown, so that the two rotate together. The cup or inclosingY portion g of the friction-coupling forms a part of the clutch c.

, This device is valuable f or many kinds of machinery, such as saw-mills, and in any place where a considerable power is to be transmitted which could not be surely or economically done by a'friction-co uplin g alone, and where it would not 4do to make the connection suddenly, as with the rigid coupling.

The different parts herein described, or

equivalent devices, may be used, and either portion may be connected with either shaft a or b.`

I do not confine myself to any vparticular form of clutch orfriction coupling; but,

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

The combination, with shafts a and b, of the movable parts c g of the coupling, and the stationary portion c, having the movable portion f, with their operating-levers, the several parts constructed and relatively arranged as herein shown and described.

In witness whereof I have hereunto set my hand and seal.

AMBROSE A. OSBORN. [L. s.]

Witnesses:

G. F. BARRETT, DE WITT C. ALLEN. 

